John Sylvester Biography and Net Worth

Director of Delcath Systems


John R. Sylvester most recently served as CEO of Curium Pharma’s SPECT and International businesses. Prior to that he served as Chief Commercial Officer of BTG plc, which he joined in 2011 and had roles leading both their Interventional Oncology and Interventional Vascular businesses as well as a period as Chief Development Officer accountable for Strategy, M&A and Market access. This culminated in an exit to Boston Scientific for $4.2 billion. Prior to BTG, John was Managing Director of Biocompatibles plc, building their Interventional Oncology business which led to a successful exit to BTG for £166.0 million. John joined Biocompatibles following a period as the Vice President of Marketing for Baxter Healthcare’s $750.0 million European Medication Delivery business based in Brussels then Zurich accountable for six strategic business units incorporating drugs, devices and drug device combinations. Before this, John held a number of senior commercial roles in the industrial sector. Immediately prior to Baxter Healthcare, John was the General Manager of a Minerals company with $4.0 billion of assets on three continents, $500.0 million of sales and 1,500 employees. John graduated with joint honours in Biochemistry and Applied Molecular Biology from the University of Manchester Institute of Science and Technology (U.M.I.S.T.).

What is John Richard Sylvester's net worth?

The estimated net worth of John Richard Sylvester is at least $105.71 thousand as of August 21st, 2023. Mr. Sylvester owns 10,550 shares of Delcath Systems stock worth more than $105,711 as of December 5th. This net worth evaluation does not reflect any other investments that Mr. Sylvester may own. Learn More about John Richard Sylvester's net worth.

How do I contact John Richard Sylvester?

The corporate mailing address for Mr. Sylvester and other Delcath Systems executives is 1633 BROADWAY SUITE 22C, NEW YORK NY, 10019. Delcath Systems can also be reached via phone at 212-489-2100 and via email at [email protected]. Learn More on John Richard Sylvester's contact information.

Has John Richard Sylvester been buying or selling shares of Delcath Systems?

John Richard Sylvester has not been actively trading shares of Delcath Systems during the last quarter. Most recently, on Monday, August 21st, John Richard Sylvester bought 10,550 shares of Delcath Systems stock. The stock was acquired at an average cost of $4.80 per share, with a total value of $50,640.00. Following the completion of the transaction, the director now directly owns 10,550 shares of the company's stock, valued at $50,640. Learn More on John Richard Sylvester's trading history.

Who are Delcath Systems' active insiders?

Delcath Systems' insider roster includes Gil Aharon (Director), Gerard Michel (CEO), Sandra Pennell (SVP), John Purpura (COO), Steven Salamon (Director), John Sylvester (Director), and Vojo Vukovic (Chief Medical Officer). Learn More on Delcath Systems' active insiders.

Are insiders buying or selling shares of Delcath Systems?

During the last twelve months, Delcath Systems insiders bought shares 1 times. They purchased a total of 11,500 shares worth more than $98,095.00. The most recent insider tranaction occured on November, 11th when CEO Gerard J Michel bought 11,500 shares worth more than $98,095.00. Insiders at Delcath Systems own 17.4% of the company. Learn More about insider trades at Delcath Systems.

Information on this page was last updated on 11/11/2025.

John Richard Sylvester Insider Trading History at Delcath Systems

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
8/21/2023Buy10,550$4.80$50,640.0010,550View SEC Filing Icon  
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John Richard Sylvester Buying and Selling Activity at Delcath Systems

This chart shows John Richard Sylvester's buying and selling at Delcath Systems by year and by quarter.

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Delcath Systems Company Overview

Delcath Systems logo
Delcath Systems, Inc., an interventional oncology company, focuses on the treatment of primary and metastatic liver cancers in the United States and Europe. The company's lead product candidate is HEPZATO KIT, a melphalan for injection/hepatic delivery system to administer high-dose chemotherapy to the liver while controlling systemic exposure and associated side effects. Its clinical development program for HEPZATO is the FOCUS clinical trial for patients with metastatic hepatic dominant Uveal Melanoma to investigate objective response rate in metastatic uveal melanoma. It also provides HEPZATO as a stand-alone medical device under the CHEMOSAT Hepatic Delivery System trade name for Melphalan or CHEMOSAT for medical centers to treat a range of liver cancers in Europe. Delcath Systems, Inc. was incorporated in 1988 and is headquartered in New York, New York.
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Today's Range

Now: $10.02
Low: $9.57
High: $10.12

50 Day Range

MA: $9.94
Low: $8.19
High: $12.36

2 Week Range

Now: $10.02
Low: $8.12
High: $18.23

Volume

605,955 shs

Average Volume

796,411 shs

Market Capitalization

$353.81 million

P/E Ratio

1,002.00

Dividend Yield

N/A

Beta

0.41